Vehicle head lamp with synthetic resin reflector and ring-shaped heat shielding member

Abstract

A lamp is attached to the back end of a synthetic resin reflector through a synthetic resin lamp holder. A heat shielding member made of a metal such as stainless steel, aluminium or general steel plate is appropriately attached to the lamp holder to cover the circumferential face of said lamp holder in such a way that said circumferential face is not subjected directly to the light projected from a filament in the lamp.

I claim: 
     
       1. A vehicle head lamp, comprising: a synthetic resin reflector provided with an attachment hole at the back end thereof and a reflecting material on the inner surface thereof;   a synthetic resin lamp holder having a through-hole and being fixed in said attachment hole;   a lamp having at least a filament housed in a glass envelope and being attached to said lamp holder in such a way that said filament is positioned inside said reflector; and   a ring-shaped heat shielding member which covers the circumferential face of said lamp holder, which has a plurality of projections which attach the heat shielding member to said lamp holder, and which is made of a metal which is reflective to reflect light directly projected from said filament;   wherein said heat shielding member has a side wall which extends backward from the inner circumference thereof to cover the inner side wall of the circumferential face of said lamp holder.   
     
     
       2. A vehicle head lamp according to claim 1, wherein projections extending from said side wall of said heat shielding member are bent about said lamp holder. 
     
     
       3. A vehicle head lamp according to claim 1, wherein projections extending from the outer circumference of said heat shielding member are bent about said lamp holder. 
     
     
       4. A vehicle head lamp according to claim 3, wherein said projections engage grooves formed in said lamp holder. 
     
     
       5. A vehicle head lamp, comprising: a synthetic resin reflector provided with an attachment hole at the back end thereof and a reflecting material on the inner surface thereof;   a synthetic resin lamp holder having a through-hole and being fixed in said attachment hole;   a lamp having at least a filament housed in a glass envelope and being attached to said lamp holder in such a way that said filament is positioned inside said reflector; and   a ring-shaped head shielding member which covers the circumferential face of said lamp holder, which has a plurality of projections which attach the heat shielding member to said lamp holder, and which is made of a metal which is reflective to reflect light directly projected from said filament;   wherein said lamp is a halogen lamp.